De or het spilholding?

The correct Dutch article is:

de spilholding

Rule Words ending in -ing: almost always de. See the rule

How to use spilholding

the spilholdingde spilholding
this spilholdingdeze spilholding
that spilholdingdie spilholding
our spilholdingonze spilholding
your spilholdingjouw spilholding
every spilholdingelke spilholding
which spilholding?welke spilholding?
a big spilholding / the big spilholdingeen grote spilholding, de grote spilholding